Jump to content
SAU Community

Recommended Posts

The people who have recommended the GTX3076R - have you guys wondered at all about how the GT30 hotside will support GT3582R levels of compressor flow? Borg Warner have done a similar flowing 76mm compressor in the form of the EFR 7670 but they have gone with a bigger hotside than the GTX3076R, and I am wondering if the GTX3076R may end up being a bit more like a better spooling GT3082R.

I am awaiting results on these new turbos before I get too excited, the GTX3071R is the only one I can see being fool proof and one of those aren't going to meet this lads requirements.

  • Replies 56
  • Created
  • Last Reply

Top Posters In This Topic

Can you give me a little more input why you think I don't have the setup for 550rwhp? This has been a 3 year project and I'm committed to my goal. Thanks.

Because some of the craziest, dedicated circuit cars, are around the 650-700hp region.

Unless you intend to go all out, balls to the wall style modifications... I just feel it's over the top.

These guys are all running strokers on what are probably 30-40k motors and so on, so they are able to sit in that region without as much issue.

The people who have recommended the GTX3076R - have you guys wondered at all about how the GT30 hotside will support GT3582R levels of compressor flow? Borg Warner have done a similar flowing 76mm compressor in the form of the EFR 7670 but they have gone with a bigger hotside than the GTX3076R, and I am wondering if the GTX3076R may end up being a bit more like a better spooling GT3082R.

I am awaiting results on these new turbos before I get too excited, the GTX3071R is the only one I can see being fool proof and one of those aren't going to meet this lads requirements.

Can't say i had an issue with my 3040 (600hp) item. The GTX3076 would be what, 600-650 now?

Haha wierd coincidence. I was just thinking about that before reading this thread.

They should make a GTX3576R.

I really think Garrett make good compressors, cores, turbines and housings but do a shit job of matching them all together in some cases.

Mitsubishi and Borg Warner have their compressor wheels and turbine wheels much more similar in size.

lol @ live with 550rwhp on dynojet - funny guy.

I really want to note here that your current supporting setup is lacking for 550rwhp, and it is possibly what is holding you back at the moment, as has been said already.

I believe the cost to benefit ratio between hitting an actual 550rwhp and swapping turbos to max out your current setup may weigh heavily in the smaller turbo department.

I forsee selling your turbo and a retune could see costs under $2000 with all things considered... Where as supporting changes to see 550rwhp could easily be double. As stated also, the car is light and having it on power sooner (and with similar power to what you have currently) could be an awesome change for the best.

Have you seen:

http://www.skylinesaustralia.com/forums/topic/347726-kando-dynamics-turbo/

That turbo seems to be of 35R power and has been seen to produce 3076 type response (in posts by Status with 180rwkw[250rwhp] by 4000rpm from memory)... It also costs under $1000 AUD delivered.

What a/r hotside were you running, and how much power did you make with it?

.82

45mm gate

GTSR manifold.

270 @ 17 PULP

370 @ 24 SUNOCO 104

it'd be well into the 300 on PULP. my bad 3" exhaust caused issues.

and then i was EPAd, so took out the setup before getting a 3.5-4" done.

if your looking for that sort of power and to make the most of the new compressors i'd go a 1.06 housing on the gt30, twin scroll if your manifold allows it. it wont get you 550rwhp (on our dynos anyway, not sure how different yours are) but it should make a solid 450rwhp with a very nice midrange

Ah ok so really kinda hard to compare ultimately :(

Yep :(

Its just a theory, but it did make the power on fuel - which does tend to mask exhaust issues to a point - so it can at least flow that much.

I really wish i had a chance to see it to the end, but ye, 25 out, 26 in!

Again -- appreciate the suggestions and advice...

I don't want to revisit all of the details of my very disappointing introduction to the tuner world and how much money it has cost me, but let's just say that I'm not looking for a quick fix or a cheap solution. I've seen one additional piece of information about getting the engine to perform at a 550rwhp level (stroker kit), but I have also seen contradictory information... Suggesting that a simple turbo fix or increasing the psi to 22-24 will achieve the power is odd since people are also saying that the car is not capable of 550rwhp.

For the sake of argument... Let's just assume money is not an issue. What will it take to get this engine performing 550rwhp reliably on pump gas while not sacrificing spool?

I've wasted a lot of time and money going on hearsay from forums in the US, but I really need some concrete facts on whether or not this engine is capable of doing what I want?

Edited by radianation

I would start with the fuel system, a Nice 4L surge tank with twin pumps.

Some nice tough valve springs

Bigger exhaust and dump pipe + good 4 or 5" body cat

Do you have pics of your exhaust manifold, maybe spend some coin on a Full Race one.

Can I ask what duty cycle you are seeing with the 850cc injectors?

How much timing are you running?

What Intercooler are you using?

What compression ratio? from memory the Weiso's are quite low on comp + your head gasket

I have a lovefab exhaust manifold. Pics are not the best:

2507214488_5c38e136f1_z.jpg?zz=1

2439869248_5f557704db_z.jpg?zz=1

2439045321_78fca6dc63_z.jpg?zz=1

2439869188_fbe2f3f1c1_z.jpg?zz=1

Injectors were around 60% duty cycle during last dyno tune. Fuel delivery did not seem to be a limitation at that time, but I agree the fuel system is not very stout. Already researching a surge tank thanks to your suggestion. Any specific recommendation on pumps? Most people doing RB swaps go for the Walbro, but it does seem to be a shortcut... I don't want my fuel pump failing on the track. =)

I will grab a screenshot of my timing map from the AEM EMS tomorrow and post it here.

I do not know what kind of intercooler - it appears to be generic fmic.

I do not know the exact compression ratio. I have Wiseco 20+ pistons and a Cometic 1.1mm head gasket. Thank you btw.

Also, back to the possible issue of valve float, if you watch in this video, right about the time where the dip is in the power on my dyno chart you see a puff of black smoke from the exhaust. Any clue?

Nothing wrong with that exhaust manifold!

For the pumps i would go 2 x Bosch 044's or if you like the walbros go 2x the inline Walbro, (GSS-341?)

The puff of smoke could be a number of things, but the video doesnt give any real clue as to what is going on (to me anyhow)

I honestly cannot hear valve float in your video, however you are well beyond the known point for stock valve springs.. So I would change these and save the heartache later.

To get to your powergoal I would agree with what has been advised as is:

Run a fuel surge tank, lift off your existing walbro then 2 x pumps up the standard line.

Completely new TBE. 4" dump minimum and 3.5" catback minimum.

More boost.

A proper intercooler (not a generic china item). - my addition

If the above doesnt work for you.. you know a change of turbo SHOULD be the trick (assuming you dont just have a dud motor).

Be it myself chasing 400+rwkw (550rwhp), my turbo choices would be T04Z, GT3788 and GT4088. I think the T04Z is the safest option, it is documented to death on this forum... Give the search a wurl. I honestly know Nothing about your current turbo.

Good tips. So no need to upgrade the OEM fuel lines when going to 2 x pumps and surge tank?

My current wastegate is plumbed back into my exhaust at an angle where the dump pipe bends. I'm thinking about removing this and going open wastegate. Now would be the time to decide as I configure an entirely new exhaust.

I wish I could find out what intercooler I have. The shop who assisted me with this originally from 3 years ago purchased it and claimed it was a quality product, but I've never seen a name on it. =/

I'll do some more searches on here for the T04Z feedback.

Edited by radianation

Suggesting that a simple turbo fix or increasing the psi to 22-24 will achieve the power is odd since people are also saying that the car is not capable of 550rwhp.

nonononono... the MOTOR is capable, but the driver/car setup/cooling etc - is not.

Anyone can make power on a dyno mate.

Its getting it to last 3-5 years that is the real challenge ;)

I agree - making power is no good if it's not sustainable, which is why I've taken steps to improve the weak points of the engine. However, you're still not qualifying what you're saying, and I am a little confused now as to why you're suggesting that the driver is not capable of producing 550rwhp?

Also, the power has lasted (so far) for 3 years. It's just not my goal.

Edited by radianation

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...